脚本源代码：

#if UNITY_EDITOR
using UnityEditor;
using UnityEngine;
using System.IO;
using UnityEditorInternal;
using System.Collections.Generic;
using System;public class TextureImporterWindow : EditorWindow
{private string folderPath = "D:/";private string filePath = "D:/";private string searchPattern = "*.png";private string savePath = "C:/Users/26679/Desktop";[MenuItem("Tools/导入图片")]public static void ShowWindow(){GetWindow<TextureImporterWindow>("导入图片窗口");}[Obsolete]void OnGUI(){// 顶部留白10像素GUILayout.Space(10);EditorGUILayout.BeginVertical("box");GUILayout.Label("文件夹导入", EditorStyles.boldLabel);// 路径设置folderPath = EditorGUILayout.TextField("文件夹路径：", folderPath);// 文件过滤searchPattern = EditorGUILayout.TextField("筛选文件格式：", searchPattern);EditorGUILayout.BeginHorizontal();if (GUILayout.Button("浏览", GUILayout.Width(80))){folderPath = EditorUtility.OpenFolderPanel("选择一个文件夹", "D:/", "");}// 导入按钮if (GUILayout.Button("全部导入")){if (Directory.Exists(folderPath)){ImportTexturesFromFolder(folderPath, searchPattern);}else{EditorUtility.DisplayDialog("Error", "文件夹不存在!", "OK");}}EditorGUILayout.EndHorizontal();GUILayout.EndVertical();GUILayout.Space(20);EditorGUILayout.BeginVertical("box");GUILayout.Label("单个图片导入", EditorStyles.boldLabel);EditorGUILayout.BeginHorizontal("box");filePath = EditorGUILayout.TextField("图片路径：", filePath);if (GUILayout.Button("浏览", GUILayout.Width(80))){// 打开文件选择对话框filePath = EditorUtility.OpenFilePanel("请选择图片文件", "", "png,jpg,jpeg");}// 导入按钮if (GUILayout.Button("导入")){if (!string.IsNullOrEmpty(filePath)){ImportTexturesFromFile(filePath);}else{EditorUtility.DisplayDialog("Error", "文件不存在!", "OK");}}EditorGUILayout.EndHorizontal();EditorGUILayout.EndVertical();GUILayout.Space(20);EditorGUILayout.BeginVertical("box");GUILayout.Label("将选中的Texture资源全部切片（用于将精灵表每一帧切割成片）", EditorStyles.boldLabel);// 切割按钮if (GUILayout.Button("切片为Sprites")){// 获取所有选中的纹理资源Texture2D[] textures = Selection.GetFiltered<Texture2D>(SelectionMode.Assets);if (textures.Length > 0){foreach (Texture2D texture in textures){string path = AssetDatabase.GetAssetPath(texture);TextureImporter importer = AssetImporter.GetAtPath(path) as TextureImporter;if (importer != null){importer.textureType = TextureImporterType.Sprite;//纹理类型为Sprite// importer.spriteImportMode = SpriteImportMode.Single;//Sprite模式为多个；importer.filterMode = FilterMode.Point;//过滤模式为点； 对像素图处理比较好，还有其它双线算法；importer.textureCompression = TextureImporterCompression.Uncompressed;//不压缩；importer.isReadable = true;//可读写；importer.maxTextureSize = 2048;importer.SaveAndReimport();}else{Debug.Log("导入设置失败！");}DoAutomaticSlicing(false, texture);}}else{Debug.LogWarning("0 个Texture2D 资源被选中！");}}EditorGUILayout.BeginHorizontal("box");savePath = EditorGUILayout.TextField("保存路径：", savePath);if (GUILayout.Button("浏览", GUILayout.Width(80))){// 打开文件选择对话框savePath = EditorUtility.OpenFolderPanel("选择一个文件夹", "D:/", "");}// 切割按钮if (GUILayout.Button("切片导出png")){// 获取所有选中的纹理资源Texture2D[] textures = Selection.GetFiltered<Texture2D>(SelectionMode.Assets);if (textures.Length > 0){foreach (Texture2D texture in textures){string path = AssetDatabase.GetAssetPath(texture);TextureImporter importer = AssetImporter.GetAtPath(path) as TextureImporter;if (importer != null){importer.textureType = TextureImporterType.Sprite;//纹理类型为Spriteimporter.spriteImportMode = SpriteImportMode.Multiple;//Sprite模式为多个；importer.filterMode = FilterMode.Point;//过滤模式为点； 对像素图处理比较好，还有其它双线算法；importer.textureCompression = TextureImporterCompression.Uncompressed;//不压缩；importer.isReadable = true;//可读写；importer.maxTextureSize = 2048;importer.SaveAndReimport();}else{Debug.Log("导入设置失败！");}DoAutomaticSlicing(true, texture);}}else{Debug.LogWarning("0 个Texture2D 资源被选中！");}}EditorGUILayout.EndHorizontal();EditorGUILayout.EndVertical();GUILayout.Space(20);if (GUILayout.Button("test")){Debug.Log("This is a test!");//测试代码；}}#region 图片导入void ImportTexturesFromFolder(string path, string pattern){string[] files = Directory.GetFiles(path, pattern, SearchOption.AllDirectories);string projectPath = Application.dataPath;string targetFolder = "Assets/ImportedTextures/" + new DirectoryInfo(folderPath).Name + "/";// 创建目标文件夹if (!AssetDatabase.IsValidFolder(targetFolder)){AssetDatabase.CreateFolder("Assets", "ImportedTextures");AssetDatabase.CreateFolder("Assets/ImportedTextures", new DirectoryInfo(folderPath).Name);}int successCount = 0;foreach (string file in files){try{string fileName = Path.GetFileName(file);string destPath = Path.Combine(targetFolder, fileName);// 复制文件到项目目录File.Copy(file, destPath, true);// Debug.Log($"复制: {file} -> {destPath}");successCount++;}catch (System.Exception e){Debug.LogError($"导入失败 {file}: {e.Message}");}}// 刷新资源数据库AssetDatabase.Refresh();// 设置导入设置foreach (string file in files){string fileName = Path.GetFileName(file);string assetPath = $"{targetFolder}{fileName}";TextureImporter importer = AssetImporter.GetAtPath(assetPath) as TextureImporter;if (importer != null){importer.textureType = TextureImporterType.Sprite;//纹理类型为Spriteimporter.spriteImportMode = SpriteImportMode.Multiple;//Sprite模式为单个；importer.filterMode = FilterMode.Point;//过滤模式为点； 对像素图处理比较好，还有其它双线算法；importer.textureCompression = TextureImporterCompression.Uncompressed;//不压缩；importer.isReadable = true;//可读写；importer.maxTextureSize = 2048;importer.SaveAndReimport();}else{Debug.Log("importer 为null");}}EditorUtility.DisplayDialog("导入完成",$"导入成功 {successCount}/{files.Length} textures", "OK");}void ImportTexturesFromFile(string file){string projectPath = Application.dataPath;string targetFolder = "Assets/ImportedTextures/";// 创建目标文件夹if (!AssetDatabase.IsValidFolder(targetFolder)){AssetDatabase.CreateFolder("Assets", "ImportedTextures");}try{string fileName = Path.GetFileName(file);string destPath = Path.Combine(targetFolder, fileName);// 复制文件到项目目录File.Copy(file, destPath, true);// Debug.Log($"Copied: {file} -> {destPath}");// 刷新资源数据库AssetDatabase.Refresh();// 设置导入设置string assetPath = $"Assets/ImportedTextures/{fileName}";TextureImporter importer = AssetImporter.GetAtPath(assetPath) as TextureImporter;if (importer != null){importer.textureType = TextureImporterType.Sprite;//纹理类型为Spriteimporter.spriteImportMode = SpriteImportMode.Multiple;//Sprite模式为单个；importer.filterMode = FilterMode.Point;//过滤模式为点； 对像素图处理比较好，还有其它双线算法；importer.textureCompression = TextureImporterCompression.Uncompressed;//不压缩；importer.isReadable = true;//可读写；importer.maxTextureSize = 2048;importer.SaveAndReimport();}EditorUtility.DisplayDialog("导入完成！",$"成功导入 1 textures", "OK");}catch (System.Exception e){Debug.LogError($"Failed to import {file}: {e.Message}");}}#endregion#region  Slice图片[Obsolete]private void DoAutomaticSlicing(bool isExport, Texture2D OrigonTxr, int minimumSpriteSize = 4){Texture2D copyTexture = new Texture2D(OrigonTxr.width, OrigonTxr.height);copyTexture.SetPixels(OrigonTxr.GetPixels());copyTexture.Apply();Rect[] one = InternalSpriteUtility.GenerateAutomaticSpriteRectangles(copyTexture, minimumSpriteSize, 0);List<Rect> frames = new List<Rect>(one);frames = SortRects(frames, OrigonTxr.width);int index = 0;if (isExport){foreach (Rect frame in frames){ExportSpriteRectToPNG(OrigonTxr, frame, index++);}Debug.Log($"源{OrigonTxr.name}已经成功导出{index}张png图片，并保存到：{savePath}");}else{string path = AssetDatabase.GetAssetPath(OrigonTxr);TextureImporter importer = AssetImporter.GetAtPath(path) as TextureImporter;if (importer != null){importer.textureType = TextureImporterType.Sprite;//纹理类型为Spriteimporter.spriteImportMode = SpriteImportMode.Multiple;//Sprite模式为多个；importer.filterMode = FilterMode.Point;//过滤模式为点； 对像素图处理比较好，还有其它双线算法；importer.textureCompression = TextureImporterCompression.Uncompressed;//不压缩；importer.isReadable = true;//可读写；importer.maxTextureSize = 2048;importer.SaveAndReimport();}else{Debug.Log("importer 为null");}List<SpriteMetaData> metas = new List<SpriteMetaData>();//于生成精灵的编辑器数据。表的名字；用于给子图命名；foreach (Rect rect in frames)//生成精灵小图；{SpriteMetaData meta = new SpriteMetaData();meta.rect = rect;meta.name = OrigonTxr.name + "_" + index++;metas.Add(meta);}importer.spritesheet = metas.ToArray();//精灵小图数组添加到父精灵图后；Debug.Log($"{OrigonTxr.name}成功生成{metas.Count} 个子Sprites ! ");}}// 1. Find top-most rectangle// 2. Sweep it vertically to find out all rects from that "row"// 3. goto 1.// This will give us nicely sorted left->right top->down list of rectangles// Works for most sprite sheets pretty nicelyprivate List<Rect> SortRects(List<Rect> rects, int width){List<Rect> result = new List<Rect>();while (rects.Count > 0){// Because the slicing algorithm works from bottom-up, the topmost rect is the last one in the arrayRect r = rects[rects.Count - 1];Rect sweepRect = new Rect(0, r.yMin, width, r.height);List<Rect> rowRects = RectSweep(rects, sweepRect);if (rowRects.Count > 0)result.AddRange(rowRects);else{// We didn't find any rects, just dump the remaining rects and continueresult.AddRange(rects);break;}}return result;}private List<Rect> RectSweep(List<Rect> rects, Rect sweepRect){if (rects == null || rects.Count == 0)return new List<Rect>();List<Rect> containedRects = new List<Rect>();foreach (Rect rect in rects){if (rect.Overlaps(sweepRect))containedRects.Add(rect);}// Remove found rects from original listforeach (Rect rect in containedRects)rects.Remove(rect);// Sort found rects by x positioncontainedRects.Sort((a, b) => a.x.CompareTo(b.x));return containedRects;}#endregion#region  导出 png文件// public Sprite spriteToExport;// public Rect rectToExport;private void ExportSpriteRectToPNG(Texture2D texture, Rect rectToExport, int index){if (texture == null){Debug.LogError("要导出的源Texture2D为空！");return;}// 计算裁剪区域在Texture2D中的实际坐标int x = (int)rectToExport.x;int y = (int)rectToExport.y;int width = (int)rectToExport.width;int height = (int)rectToExport.height;// 创建新的Texture2D对象，用于存储裁剪后的像素数据Texture2D outputTexture = new Texture2D(width, height, TextureFormat.RGBA32, false);Color[] pixels = texture.GetPixels(x, y, width, height);outputTexture.SetPixels(pixels);outputTexture.Apply();// 编码为PNG格式byte[] pngData = outputTexture.EncodeToPNG();// 保存文件if (pngData != null){// string filenameNoExtension = Path.GetFileNameWithoutExtension('origonPath');File.WriteAllBytes(savePath + "/" + texture.name + '_' + index + ".png", pngData);}else{Debug.LogError("无法将" + savePath + texture.name + '_' + index + ".png" + "编码为PNG文件！");}}#endregion}
#endif

演示：